Dashboard should only display information relevant to your objective. In order to make dashboard simple, it is necessary to avoid four factors as following:
Overuse of color – Using every color of the rainbow isn’t necessary. Too many colors can be distracting and confusing. Also, don’t use colors that are to similar. If using different shades of the same color, make sure the shades are different enough to distinguish at a glance.
Logos – Unless sharing the dashboard with outside partners, users should know their company. Including in the company logo only takes up space that can be used for something more important.
Navigation- If you have to split up the information into multiple windows or use scroll bars to view a full graph or chart, you run the risk of users missing key information. Did you choose the most important metrics? Are you creating a data puke?
3-D Element – The colors, shadows and axis inclination can easily skew the interpretation of the data. It’s better to keep it simple and stay 2-D.
Guide Lines & Borders – These should be used sparingly, when the context is absolutely needed.
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